PMID- 9680693 OWN - NLM STAT- MEDLINE DCOM- 19980817 LR - 20190729 IS - 1060-3271 (Print) IS - 1060-3271 (Linking) VI - 81 IP - 4 DP - 1998 Jul-Aug TI - Liquid chromatographic determination of oxytetracycline in edible fish fillets from six species of fish. PG - 702-8 AB - The approved use of oxytetracycline (OTC) in U.S. aquaculture is limited to specific diseases in salmonids and channel catfish. OTC may also be effective in controlling diseases in other fish species important to public aquaculture, but before approved use of OTC can be augmented, an analytical method for determining OTC in fillet tissue from multiple species of fish will be required to support residue depletion studies. The objective of this study was to develop and validate a liquid chromatographic (LC) method that is accurate, precise, and sensitive for OTC in edible fillets from multiple species of fish. Homogenized fillet tissues from walleye, Atlantic salmon, striped bass, white sturgeon, rainbow trout, and channel catfish were fortified with OTC at nominal concentrations of 10, 20, 100, 1000, and 5000 ng/g. In tissues fortified with OTC at 100, 1000, and 5000 ng/g, mean recoveries ranged from 83 to 90%, and relative standard deviations (RSDs) ranged from 0.9 to 5.8%. In all other tissues, mean recoveries ranged from 59 to 98%, and RSDs ranged from 3.3 to 20%. Method quantitation limits ranged from 6 to 22 ng/g for the 6 species. The LC parameters produced easily integratable OTC peaks without coelution of endogenous compounds. The method is accurate, precise, and sensitive for OTC in fillet tissue from 6 species of fish from 5 phylogenetically diverse groups. FAU - Meinertz, J R AU - Meinertz JR AD - U.S. Geological Survey, Biological Resources Division, Upper Mississippi Science Center, La Crosse, WI 54602-0818, USA. FAU - Stehly, G R AU - Stehly GR FAU - Gingerich, W H AU - Gingerich WH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PL - England TA - J AOAC Int JT - Journal of AOAC International JID - 9215446 RN - 0 (Anti-Bacterial Agents) RN - 0 (Indicators and Reagents) RN - 0 (Solutions) RN - X20I9EN955 (Oxytetracycline) SB - IM MH - Animals MH - Anti-Bacterial Agents/*analysis MH - Chromatography, Liquid MH - Fishes/*metabolism MH - Indicators and Reagents MH - Meat/*analysis MH - Oxytetracycline/*analysis MH - Solutions EDAT- 1998/07/29 00:00 MHDA- 1998/07/29 00:01 CRDT- 1998/07/29 00:00 PHST- 1998/07/29 00:00 [pubmed] PHST- 1998/07/29 00:01 [medline] PHST- 1998/07/29 00:00 [entrez] PST - ppublish SO - J AOAC Int. 1998 Jul-Aug;81(4):702-8.